<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<script src="https://unpkg.com/vue@next"></script>
<div id="app">
    <todo-item v-bind:props-a="'aaaa'"></todo-item>
</div>
<script >
    const vueOpt = {
        data(){
            return {

            }
        }
    }

    const app = Vue.createApp(vueOpt)

    app.component('todo-item', {
        props: ['propsA'],
        template: `<div>{{propsA}}</div>`
    })

    app.mount('#app');
</script>
</body>
</html>
